Ball 1 has an inertia of 0.500 kg and ball 2 has an inertia of 0.600 kg . Ball 1 is moving away from you at 5.0 m/s, and you decide to throw ball 2 at it to make it go faster. The balls collide head-on, and the coefficient of restitution for the collision is 0.95.
Part A)How fast must ball 2 be traveling in order to double the velocity of ball 1?
ANS: 9.7 m/s
Part B) What is the initial relative velocity of the two balls?
ANS: 4.7 m/s
Part C)What is their reduced inertia?
Part D )What percentage of the original kinetic energy is convertible?
The Attempt at a Solution
1.215/34.477 (x100%)= 3.5%
( every answer except Part D is correct, i'm looking for help with part D only)